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Is the 7/2(1)(-) Isomer State of S-43 Spherical?

Abstract : We report on the spectroscopic quadrupole moment measurement of the 7/2(1)(-) isomeric state in S-43(16)27 [E* = 320.5(5) keV, T-1/2 = 415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, vertical bar Q(s) vertical bar = 23(3) efm(2), is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured vertical bar Q(s) vertical bar, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.
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http://hal.in2p3.fr/in2p3-00703255
Contributor : Christine Hadrossek <>
Submitted on : Friday, June 1, 2012 - 12:28:51 PM
Last modification on : Tuesday, June 23, 2020 - 2:26:44 PM

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R. Chevrier, J.M. Daugas, L. Gaudefroy, Y. Ichikawa, H. Ueno, et al.. Is the 7/2(1)(-) Isomer State of S-43 Spherical?. Physical Review Letters, American Physical Society, 2012, 108, pp.162501. ⟨10.1103/PhysRevLett.108.162501⟩. ⟨in2p3-00703255⟩

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